Fiddler Everywhere 2026: Benefits, Features & Pricing

The amount of built-in features is the thing I like the most about Fiddler. All types of web analysis sub tools are included in the software. Detailed traffic filtering comes with saving, decoding, screenshot saving, etc. Autoresponder allows to automatically swap the response for defined requests with any payload user wants. Rules for that can be created with a lot of different filtering ways e.g. regex, simple text filtering, methods, or even headers and flags. it comes along with rules saving, importing, attaching a file to the response, and so on. Composer provides aid with REST API requests creation with logging and execution, which is powerful in connection with the scripting sub tool. The great thing about Fiddler is I don't remember any bugs or problems with the software. Each feature runs smoothly and well. Also, the whole program is highly customizable, so deep adaptation to a user's needs is possible. Web debugging was never that easy. I remember I sometimes struggled with responses over different testing frameworks, creating workarounds with console.logs and unstable debugging methods. Once I discovered Fiddler with all features everything got almost enjoyable.

To be honest, I don't see much to complain about. Maybe the only thing is that all functionalities are shown at once, in two menus, so less experienced users may feel overwhelmed. Also, sometimes it is hard to find what you are looking for, but it is not that problematic.

It is free, so that's obviously a plus. Very useful filters to focus on exactly the traffic you want to track, and a replay feature.

It has a steep learning curve. It is difficult to figure out at a glance what button does what or what you need to do to achieve "your task". Takes some exploration to figure it out.